Jim,
Great painting advice! I wanted to add that I used a single stage paint on the 109" with no clear. It looks very close to the original, but attracts dirt something awful.
On the 88", I used a single stage as well, but applied 2 clear coat top layers. I like the shine, the spot welds are not covered up, dirt comes off easy, and it does appear that it is going to hold up longer with the clear.
My gun is also a SATA (Jet 90).
I did want to ask what aluminum etching primer you are using?
61 II 109" Pickup (Restomod, 350 small block, TR4050)
66 IIA 88" Station Wagon (sold)
66 IIA 109" Pickup (Restomod, 5MGE, R380)
67 IIA 109" NADA Wagon (sold)
88, 2.5TD 110 RHD non-hicap pickup
-I used to know everything there was to know about Land Rovers; then I joined the RN Bulletin Board.